package com.csvvip.cloud.controller;


import com.csvvip.cloud.entities.CommonResult;
import com.csvvip.cloud.entities.Payment;
import com.csvvip.cloud.lb.LoadBalancer;
import com.csvvip.cloud.lb.MyBalancer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;
import java.util.List;

@RestController
@Slf4j
public class OrderController {

    public static final String PAYMENT_URL = "http://CLOUD-PAYMENT-SERVICE";

    @Resource
    private RestTemplate restTemplate;

    @Resource
    private LoadBalancer loadBalancer;

    @Resource
    private DiscoveryClient discoveryClient;

    @GetMapping("/consumer/payment/create")
    public CommonResult<Payment> create(Payment payment){
        return restTemplate.postForObject(PAYMENT_URL + "/payment/create" , payment , CommonResult.class);
    }

    @GetMapping("/consumer/payment/get/{id}")
    public CommonResult<Payment> get(@PathVariable("id") Long id){
        return restTemplate.getForObject(PAYMENT_URL + "/payment/get/"+id , CommonResult.class);
    }

    @GetMapping("/consumer/payment/getForEntity/{id}")
    public CommonResult<Payment> get2(@PathVariable("id") Long id){
        ResponseEntity<CommonResult> entity = restTemplate.getForEntity(PAYMENT_URL + "/payment/get/" + id, CommonResult.class);
        if(entity.getStatusCode().is2xxSuccessful()){
            return entity.getBody();
        }else {
            return new CommonResult<>(444 , "操作失败");
        }
    }

    @GetMapping("/consumer/payment/lb")
    public String getBalancer(){
        List<ServiceInstance> instances = discoveryClient.getInstances("CLOUD-PAYMENT-SERVICE");
        if(instances == null || instances.size() <= 0){
            return "服务不存在！！！";
        }
        ServiceInstance balancer = loadBalancer.getBalancer(instances);

        return restTemplate.getForObject(balancer.getUri() + "/payment/lb" , String.class);
    }


}